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I. ASHTON. APPARATUS FOR GRINDING ENDS OP SPINDLBS. No. 566,122;Patented Aug. 18, 1896.

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APPARATUS FOR GRINDING ENDS 0F SPINDLES. 3 No. 566,122. Patented Aug.18, 189

Jim/A W M UNITED STATES PATENT OFFICE.

FRANK ASHTON, OF'OLDHAM, ENGLAND, ASSIGNOR OF ONE-HALF TO WVILLIAMBODDEN, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 566,122, datedAugust18, 1896.

Application filed March 2, 1896. Serial No. 581,545. (No model.)

To all whom it may concern.-

Be it known that I, FRANK ASHTON, a sub ject of the Queen of GreatBritain, residing at Hargreaves Spindle Works, Oldham, in the county ofLancaster, England, have invented new and useful Improved Apparatus forGrinding the Ends of Spindles, of which the following is aspecification.

This invention relates to apparatus to be employed for grinding androunding the end or ends of any kind of spindles as used in the spinningand preparing machinery for cotton, woolen, flax, or other fibrousmaterials, and is especially applicable to mule, ring, throstleflier,and roving spindles. It is, however, applicable to grinding any spindlerod or shaft which requires the end to be hemispherical or partiallyhemispherical in shape.

In order that this invention may be under stood, I refer to theaccompanying drawings.

Figure 1 is a front elevation. Fig. 2 is an end elevation looking at theleft-hand end of Fig. 1, and Fig. 3 is a plan view of the apparatus ormachine.

The same letter is attached to corresponding parts in all three viewsshown.

According to this invention I use a grinding-wheel a of suitablediameter and width mounted upon a horizontal revolving shaft a, drivenby the pulley a and mounted upon a stand or head-stock a capable of amovement sidewise, that is endwise with regard to the said shaft a. Thisstand orhead-stock a can slide upon an ordinary V-slide a upon a bed awhich can be placed upon a bench or mounted upon suitable legs andfastened at a a. The sliding of the said head-stock a is or may beperformed by a lever a having its fulcrum at a I prefer to form the parta through which the end of the lever a is passed, with a shank a",capable of turning in a bearing a, which is a fixture on the bed a Thelever a is centered on a stud a fixed to the head-stock a sothat bymoving the lever to the left or right the head-stock a and also thegrinding-wheel a are moved therewith. Upon a projecting part 00 in frontof this wheel a I mount a table I) on a vertical pivot b, the table I?and pivot b being adjustable nearer to or farther from the edge of thegrinding-wheel a. The said table I) is also capable of turning orrevolving partially round the center of the pivot 12.

The part a of the bed o is formed with a V-slide, in which a carriage bfits and is capable of sliding. 0n the bottom of this carriage is a longboss b through which fits the long stud or pivot 12, the upper end ofwhich is fixed into the table I), which is thus free to revolve througha portion of a circle around the center of the stud b.

The carriage b is or may be adjusted to increase or diminish thedistance of the center of rotation 19 of the table I) from thegrinding-wheel a by turning the small handle I),

fastened to the screw b which passes through a nut b fixed to or formingpart of the carriage 5 Upon this table and not far from the center ofthe pivot is fixed an adjustable bracket 0 or carrier to support thespindle a: or other article near the end to be operated upon, the otherend being supported by a suitable adjustable center 01 01 d hereinafterdescribed, also fastened onto the table 1).

The bracket 0 is adjustable sidewise (that is in a direction across thetable) by means of the screw 0, and it carries a vertically-adj ustableplate 0 with a V or notch in its upper end for the spindle or rod 00 torevolve in, its adjustment being performed, according to the diameter ofthe said spindle or rod 11:, by the nut and bolt 0 A pair ofcarrier-drums e e, driven by a single band, strap, or belt e from ashaft overhead, are carried by a hand-lever or bracket 6 which is hingedto an adjustable bracket 6 on the table b, so that the said drums e ecan be brought down over the spindle or rod 0:, and thus by the frictionof the belt 6 make the spindle or rod 00 to revolve on its own axis. Thehand-lever 6 can then be raised, carrying the drums e e and strap orbelt e with it, and the spindle or rod a: may be removed. I prefer tohinge the hand-lever e to the forked rod 6 adjustable vertically in theadjustable bracket 6.

The aforesaid adjustable center supporting the spindle or rod 00 andcarried by the swinging or revolving table I) is adjusted as follows, soas to make the right length of the spindle w, the spindle being in sucha state that a small quantity has to be ground from the end:

The bracket 61 carries a foot-bearing and length-gage d, capable ofadjustment nearer to or farther from the grinding-Wheel a, and also avertically-adjustable plate 61 similar to the plate 0 The bracket d isalso adjustable in a slot running almost the whole length of the tableI) by means of the bolt 01 The parts 61, d, and (1 thus form anadjustable center.

The method of using the apparatus or machine is as follows: The table I)is brought into the position as shown in Fig. 3, the grind ing-wheel ais moved to the right by means of the lever a so that the saidgrindingwheel will be clear of the end of the spindle or rod; thegrinding-wheel a and the endless belt 6 are set in motion, the handle 0is lifted up and with it the pulleys e a. rod w is then placed in theV-supports c and d", as shown in the drawings, and the belt 6 broughtdown on top of it; the lever a is moved to the left, causing thegrinding-wheel a to pass across the point of the spindle or rod 00,grinding a flat part on the end thereof; the lever a is brought back, sothat the end of the spindle 0c is in contact or opposite to the face ofthe grinding-wheel a. The table I) is then moved to the left upon itspivot, as shown by the arrow, Fig. 3, carrying the revolving spindle orrod 00 with it, so that the end in contact with the grinding-wheel isrounded off. The table b is then brought back to its original positonand the lever a moved to the right. The lever e is then lifted up andthe spindleac removed. It is unnecessary to stop the grinding-wheel a orthe driving-belt c for insertion or removal of the spindles or rods.

By this means a spindle rod or shaft may have formed on its end ahemisphere or a portion of a hemisphere, the radius of the round partformed in the end of the spindle being the distance from the face of thegrindingwheel a to the center line produced vertically of the stud I),measured in a horizontal direction.

I claim as my invention- 1. The combination with a grinding-wheel andmeans for rotating the same, of a table capable of being rotated forpart of a revo- A spindle or lution upon a vertical axis, the said tablecarrying supports for a spindle or rod and means for rotating the saidspindle or rod, the vertical'axis of rotation of the said table being insuch a position with regard to the said grinding-wheel that therevolution of the lat ter and of the spindle or rod and the partial (sayone-quarter) revolution of the table shall cause the end of the spindleor rod to be ground to the form of a true part (say half) of a sphere.

2. The combination with a revolving grinding-wheel and means forrotating the same, of a table capable of being rotated for part of arevolution upon an adjustable vertical axis, the said table carryingsupports for the spindle or rod to be ground and means for rotating thesaid spindle or rod substantially as hereinbefore set forth.

3. The combination with a sliding stand carrying a revolvinggrinding-wheel and means for rotating the same, of a table capable ofbeing rotated for part of a revolution upon an adjustable vertical axis,the said table carrying adjustable supports for the spindle or rod to beground and means for rotating the said spindle, and the said stand beingprovided with means for moving the grindingwheel in or out of place infront of the end of the spindle or rod, substantially as hereinbeforeset forth.

4. The combination with a sliding stand carrying a revolvinggrinding-wheel and means for rotating the same, of means for sliding thesaid stand in front of a table capable of being rotated for part of arevolution upon an adjustable vertical axis, the said table carryingadjustable supports for the spindle or rod to be ground and anadjustable bracket carrying a lever upon which are mounted drums aroundwhich a single strap is passed driving the said spindle or rod to beground substantially as hereinbefore set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANK ASHTON. Witnesses:

GEORGE DAVIES, CHARLES A. DAVIES.

